136 lines
5.0 KiB
Bash
136 lines
5.0 KiB
Bash
#!/bin/bash
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#
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# lib/nova_plugins/functions-libvirt
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# Common libvirt configuration functions
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# Dependencies:
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# ``functions`` file
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# ``STACK_USER`` has to be defined
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# Save trace setting
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_XTRACE_NOVA_FN_LIBVIRT=$(set +o | grep xtrace)
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set +o xtrace
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# Defaults
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# --------
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# Turn on selective debug log filters for libvirt.
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# (NOTE: Enabling this by default, because the log filters enabled in
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# 'configure_libvirt' function further below are _selective_ and not
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# extremely verbose.)
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DEBUG_LIBVIRT=$(trueorfalse True DEBUG_LIBVIRT)
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# Installs required distro-specific libvirt packages.
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function install_libvirt {
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if is_ubuntu; then
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if is_arch "aarch64" && [[ ${DISTRO} == "trusty" ]]; then
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install_package qemu-system
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else
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install_package qemu-kvm
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install_package libguestfs0
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fi
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install_package libvirt-bin libvirt-dev
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pip_install_gr libvirt-python
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if [[ "$EBTABLES_RACE_FIX" == "True" ]]; then
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# Work around for bug #1501558. We can remove this once we
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# get to a version of Ubuntu that has new enough libvirt.
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TOP_DIR=$TOP_DIR $TOP_DIR/tools/install_ebtables_workaround.sh
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fi
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#pip_install_gr <there-si-no-guestfs-in-pypi>
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elif is_fedora || is_suse; then
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# On "KVM for IBM z Systems", kvm does not have its own package
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if [[ ! ${DISTRO} =~ "kvmibm1" ]]; then
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install_package kvm
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fi
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# there is a dependency issue with kvm (which is really just a
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# wrapper to qemu-system-x86) that leaves some bios files out,
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# so install qemu-kvm (which shouldn't strictly be needed, as
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# everything has been merged into qemu-system-x86) to bring in
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# the right packages. see
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# https://bugzilla.redhat.com/show_bug.cgi?id=1235890
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install_package qemu-kvm
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install_package libvirt libvirt-devel
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pip_install_gr libvirt-python
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fi
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}
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# Configures the installed libvirt system so that is accessible by
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# STACK_USER via qemu:///system with management capabilities.
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function configure_libvirt {
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if is_service_enabled neutron && is_neutron_ovs_base_plugin && ! sudo grep -q '^cgroup_device_acl' $QEMU_CONF; then
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# Add /dev/net/tun to cgroup_device_acls, needed for type=ethernet interfaces
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cat <<EOF | sudo tee -a $QEMU_CONF
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cgroup_device_acl = [
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"/dev/null", "/dev/full", "/dev/zero",
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"/dev/random", "/dev/urandom",
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"/dev/ptmx", "/dev/kvm", "/dev/kqemu",
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"/dev/rtc", "/dev/hpet","/dev/net/tun",
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]
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EOF
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fi
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# Since the release of Debian Wheezy the libvirt init script is libvirtd
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# and not libvirtd-bin anymore.
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if is_ubuntu && [ ! -f /etc/init.d/libvirtd ]; then
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LIBVIRT_DAEMON=libvirt-bin
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else
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LIBVIRT_DAEMON=libvirtd
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fi
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if is_fedora || is_suse; then
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# Starting with fedora 18 and opensuse-12.3 enable stack-user to
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# virsh -c qemu:///system by creating a policy-kit rule for
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# stack-user using the new Javascript syntax
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rules_dir=/etc/polkit-1/rules.d
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sudo mkdir -p $rules_dir
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cat <<EOF | sudo tee $rules_dir/50-libvirt-$STACK_USER.rules
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polkit.addRule(function(action, subject) {
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if (action.id == 'org.libvirt.unix.manage' &&
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subject.user == '$STACK_USER') {
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return polkit.Result.YES;
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}
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});
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EOF
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unset rules_dir
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fi
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# The user that nova runs as needs to be member of **libvirtd** group otherwise
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# nova-compute will be unable to use libvirt.
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if ! getent group $LIBVIRT_GROUP >/dev/null; then
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sudo groupadd $LIBVIRT_GROUP
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fi
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add_user_to_group $STACK_USER $LIBVIRT_GROUP
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# Enable server side traces for libvirtd
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if [[ "$DEBUG_LIBVIRT" = "True" ]] ; then
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if is_ubuntu; then
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# Unexpectedly binary package builds in ubuntu get fully qualified
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# source file paths, not relative paths. This screws with the matching
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# of '1:libvirt' making everything turn on. So use libvirt.c for now.
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# This will have to be re-visited when Ubuntu ships libvirt >= 1.2.3
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local log_filters="1:libvirt.c 1:qemu 1:conf 1:security 3:object 3:event 3:json 3:file 1:util 1:cpu"
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else
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local log_filters="1:libvirt 1:qemu 1:conf 1:security 3:object 3:event 3:json 3:file 1:util 1:cpu"
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fi
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local log_outputs="1:file:/var/log/libvirt/libvirtd.log"
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if ! sudo grep -q "^log_filters=\"$log_filters\"" /etc/libvirt/libvirtd.conf; then
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echo "log_filters=\"$log_filters\"" | sudo tee -a /etc/libvirt/libvirtd.conf
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fi
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if ! sudo grep -q "^log_outputs=\"$log_outputs\"" /etc/libvirt/libvirtd.conf; then
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echo "log_outputs=\"$log_outputs\"" | sudo tee -a /etc/libvirt/libvirtd.conf
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fi
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fi
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# Service needs to be started on redhat/fedora -- do a restart for
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# sanity after fiddling the config.
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restart_service $LIBVIRT_DAEMON
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}
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# Restore xtrace
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$_XTRACE_NOVA_FN_LIBVIRT
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# Local variables:
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# mode: shell-script
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# End:
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